Latitude ON is an instant on computer system made by Dell. It is a combination of software and hardware developed by Dell and used in some of their Latitude laptops. The system is based on a dedicated ARM processor (Texas Instruments OMAP 3430) that runs a custom version of a Linux OS. It was announced on August 12, 2008 along with other laptops, including a potential competitor to the Asus Eee PC and arrived a year later on 28 September 2009.
Latitude ON runs MontaVista Linux on an ARM-based subprocessor. This so-called MontaVista Montabello Mobile Internet Device Solution provides a customizable, Linux-based Mobile Internet Device (MID) platform the laptop is able to boot almost instantly and view Email, document reader, calendar, contacts and access the Internet.
First laptop models to include Latitude ON were E4200 and E4300 released in February 2009. Last laptop model introduced so far is Latitude Z600. Dell claims that battery life can be extended to days.
Latitude ON Reader is similar to Dell's MediaDirect where the software is located in a separate partition on the system hard drive and has a dedicated button to power on.